N* → Nη′ decays from photoproduction of η′-mesons off protons

A study of the partial-wave content of the gamma p -> eta' p preaction in the fourth resonance region is presented, which has been prompted by new measurements of polarization observables for that process. Using the Bonn-Gatchina partial-wave formalism, the incorporation of new data indicates that the N(1895) 1/2(-), N(1900) 3/2(+), N(2100) 1/2(+), and N(2120) 3/2(-) are the most significant contributors to the photoproduction process. New results for the branching ratios of the decays of these more prominent resonances to N eta' final states are provided; such branches have not been indicated in the most recent edition of the Review of Particle Properties. Based on the analysis performed here, predictions for the helicity asymmetry Efor the gamma p -> eta' ppreaction are presented. (C) 2017 The Authors. Published by Elsevier B.V.